To provide an additive which can stably use a conventional electrolytic solution and for which the synthesizing and the purification are easily performed.SOLUTION: There is provided a positive electrode material stabilizer containing a pyrazine compound having a plurality of aminobenzyl groups as an active ingredient. In addition, there is provided a method for producing a compound using a microorganism incorporating the nucleotide sequence set forth in SEQ ID NOs: 1 to 7. Further, there is provided a method for stabilizing a positive electrode material by adding the compound to an electrolytic solution.SELECTED DRAWING: Figure 1

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